<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<meta name="viewport" content="width=device-width, initial-scale=1">
		<title></title>
	</head>
	<body>
	<script type="text/javascript">
		var a = "1.1";
		a = parseFloat(a);
		document.write(a+0.2);
	</script>	
	</body>
</html>